Relevant bibliographies by topics / Generalized velocity

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Generalized velocity'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Generalized velocity"

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Stovas, Alexey, and Sergey Fomel. "Generalized velocity approximation." GEOPHYSICS 84, no. 1 (2019): C27—C40. http://dx.doi.org/10.1190/geo2018-0401.1.

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We have developed a new approximation for P-wave velocity that has the same functional form for phase and group velocities. We call it the generalized velocity approximation (GVA) because it is similar to the generalized moveout approximation. The 2D GVA has five parameters, and the 3D GVA has 12 parameters. Our approximation is exact for the phase velocity in a transversely isotropic medium. The parameters of the 3D version of the proposed approximation are defined in all of the symmetry planes in the same fashion. Numerical examples indicate that our approximation has the same accuracy as re
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GÖRSCH, D. "GENERALIZED DISCRETE VELOCITY MODELS." Mathematical Models and Methods in Applied Sciences 12, no. 01 (2002): 49–75. http://dx.doi.org/10.1142/s0218202502001544.

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Starting from a mesoscopic principle of moment conservation, discrete Boltzmann collision operators Jh are constructed, which both converge to bounded collision operators JΩ and have the same collision invariants as the original Boltzmann collision operator J. The crucial point of this construction is the application of a weak formulation of the gain operator to remove the post-collision velocities from it as well as the development of moment conserving integration formulas for the approximation of surface integrals over the unit sphere. Finally two applications for the discrete operators are
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Anim-Appiah, K. D. "On generalized covariance-based velocity estimation." IEEE Transactions on Vehicular Technology 48, no. 5 (1999): 1546–57. http://dx.doi.org/10.1109/25.790529.

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Swamee, Prabhata K. "Generalized Inner Region Velocity Distribution Equation." Journal of Hydraulic Engineering 119, no. 5 (1993): 651–56. http://dx.doi.org/10.1061/(asce)0733-9429(1993)119:5(651).

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ZHU, ChangSheng, HaiJun ZHANG, Qin YANG, and ZhiXian ZHONG. "Generalized maxwell velocity slip boundary model." SCIENTIA SINICA Physica, Mechanica & Astronomica 43, no. 5 (2013): 662–69. http://dx.doi.org/10.1360/132011-827.

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Chen, Jing-Bo. "On the selection of reference velocities for split-step Fourier and generalized-screen migration methods." GEOPHYSICS 75, no. 6 (2010): S249—S257. http://dx.doi.org/10.1190/1.3517745.

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Split-step Fourier and generalized-screen migration methods are approximations with separation of variables to the one-way wave operator, in which the separation of space and wavenumber variables makes it possible to use the discrete fast Fourier transform to achieve computational efficiency. Both methods require the selection of reference velocities. Different choices of reference velocities lead to different velocity perturbations, and the smaller the velocity perturbations, the better the final image quality. The benefits of selecting a more representative reference velocity for the split-s
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HEPPE, BURKHARD M. O. "Generalized Langevin equation for relative turbulent dispersion." Journal of Fluid Mechanics 357 (February 25, 1998): 167–98. http://dx.doi.org/10.1017/s0022112097008069.

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The relative velocity of two fluid particles in homogeneous and stationary turbulence is considered. Looking for reduced dynamics of turbulent dispersion, we apply the nonlinear Mori–Zwanzig projector method to the Navier–Stokes equations. The projector method decomposes the Lagrangian acceleration into a conditionally averaged part and a random force. The result is an exact generalized Langevin equation for the Lagrangian velocity differences accounting for the exact equation of the Eulerian probability density. From the generalized Langevin equation, we obtain a stochastic model of relative
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SAWADA, SHIRO. "GENERALIZED OPTIMAL VELOCITY MODEL FOR TRAFFIC FLOW." International Journal of Modern Physics C 13, no. 01 (2002): 1–12. http://dx.doi.org/10.1142/s0129183102002894.

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A generalized optimal velocity model is analyzed, where the optimal velocity function depends not only on the headway of each car but also the headway of the immediately preceding one. The stability condition of the model is derived by considering a small perturbation around the homogeneous flow solution. The effect of the generalized optimal velocity function is also confirmed with numerical simulations, by examining the hysteresis loop in the headway-velocity phase space, and the relation between the flow and density of cars. In the model with a specific parameter choice, it is found that an
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Grosan, Teodor, Cornelia Revnic, and Ioan Pop. "Blasius Problem with Generalized Surface Slip Velocity." Journal of Applied Fluid Mechanics 9, no. 6 (2016): 1641–44. http://dx.doi.org/10.18869/acadpub.jafm.68.235.24826.

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Zhang, Xuelong. "Generalized transform of the relativistic phase velocity." European Journal of Physics 15, no. 6 (1994): 309–11. http://dx.doi.org/10.1088/0143-0807/15/6/005.

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Dissertations / Theses on the topic "Generalized velocity"

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Ogden, Jerry Scott. "Generalized deformation and total velocity change analysis system of equations (G-DaTADeltaV(TM))." Thesis, University of Colorado at Denver, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3739580.

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<p>Ogden, Jerry Scott (PhD, Engineering and Applied Sciences) Generalized Deformation and Total Velocity Change Analysis System of Equations (G-DaTADeltaV?) Thesis directed by Professor Bruce Janson ABSTRACT Current methods for analyzing motor vehicle deformation utilize a force-deflection analysis for determining deformation work energy, which relies on vehicle-specific structural stiffness coefficients determined from full-scale impact testing. While the current database is quite extensive for frontal stiffness values for passenger cars and many light trucks, vans and SUVs from the 1970?s up
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Palese, Federico. "Modellazione statica e dinamica di gusci in materiale composito rinforzati da fibre curvilinee: vibrazioni libere, profili di tensione e deformazione, velocità critiche di rotazione." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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Lo scopo di questa tesi è studiare il comportamento statico e dinamico di gusci a singola e doppia curvatura, rinforzati da fibre curvilinee. La tecnologia Variable Angle Tow (VAT) consente la collocazione di fibre lungo percorsi curvilinei allo scopo di migliorare le prestazioni strutturali di piastre e gusci. Le analisi statiche e dinamiche di diverse strutture sono state risolte con il metodo numerico GDQ.
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Nérin, Philippe. "Étude et réalisation d'un télémètre et vélocimètre utilisant en mode autodyne un microlaser balayé en fréquence." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0114.

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Ce travail est consacre a l'etude theorique et experimentale d'un systeme de teledetection laser utilisant le principe de la detection autodyne. Ce principe consiste a utiliser a la fois l'oscillateur laser comme source de lumiere et comme melangeur optique. Les signaux optiques en provenance du milieu sonde sont reintroduits dans la cavite du laser et sont ainsi melanges dans le milieu a gain avec l'onde stationnaire. Cette methode permet d'amplifier substantiellement de tres faibles signaux optiques provenant de la retrodiffusion du faisceau laser avec des surfaces faiblement cooperatives. A
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Chang, Chien-Chung, and 張建忠. "Generalized finite difference method for two-dimensional velocity-vorticity formulation and the assessment of its parallel efficiency." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/xdb9qq.

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碩士<br>國立臺灣海洋大學<br>河海工程學系<br>103<br>In this study, we use the generalized finite difference method (GFDM) to simulate the two-dimensional fluid fields of incompressible viscous fluid. In order to accelerate the computational speed, we parallelize our program on a multithreading computer which has shared memory architecture. To validate the feasibility, accuracy and the parallel efficiency of the meshless method proposed in this article, we provided three numerical examples. The velocity-vorticity formulation are solved in this study and it is another form of the standard Navier-Stokes equations
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Smit, Jacoba Elizabeth. "Modelled response of the electrically stimulated human auditory nerve fibre." Thesis, 2008. http://upetd.up.ac.za/thesis/available/etd-09182008-144232/.

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Books on the topic "Generalized velocity"

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Deruelle, Nathalie, and Jean-Philippe Uzan. Vector geometry. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198786399.003.0002.

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This chapter defines the mathematical spaces to which the geometrical quantities discussed in the previous chapter—scalars, vectors, and the metric—belong. Its goal is to go from the concept of a vector as an object whose components transform as Tⁱ → 𝓡ⱼ ⁱTj under a change of frame to the ‘intrinsic’ concept of a vector, T. These concepts are also generalized to ‘tensors’. The chapter also briefly remarks on how to deal with non-Cartesian coordinates. The velocity vector v is defined as a ‘free’ vector belonging to the vector space ε‎3 which subtends ε‎3. As such, it is not bound to the point P
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Mann, Peter. Coordinates & Constraints. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198822370.003.0006.

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This short chapter introduces constraints, generalised coordinates and the various spaces of Lagrangian mechanics. Analytical mechanics concerns itself with scalar quantities of a dynamic system, namely the potential and kinetic energies of the particle; this approach is in opposition to Newton’s method of vectorial mechanics, which relies upon defining the position of the particle in three-dimensional space, and the forces acting upon it. The chapter serves as an informal, non-mathematical introduction to differential geometry concepts that describe the configuration space and velocity phase
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Morawetz, Klaus. Selfenergy. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198797241.003.0006.

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The averaged wave functions allow defining the transport vertex. For the correlation functions this leads to the Generalised Kadanoff and Baym formalism with the Langreth–Wilkins rules. The meaning of the selfenergy is explored. The Green’s function is a secular equation in which the complicated motion of a particle during interaction is represented by the selfenergy. The quasiparticle picture is applicable to long trajectories, where the averaged velocity is of interest. In processes like emission, the Doppler shift depends on the local velocity and one has to return to the microscopic pictur
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Escudier, Marcel. Basic equations of viscous-fluid flow. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198719878.003.0015.

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In this chapter it is shown that application of the momentum-conservation equation (Newton’s second law of motion) to an infinitesimal cube of fluid leads to Cauchy’s partial differential equations, which govern the flow of any fluid satisfying the continuum hypothesis. Any fluid flow must also satisfy the continuity equation, another partial differential equation, which is derived from the mass-conservation equation. It is shown that distortion of a flowing fluid can be split into elongational distortion and angular distortion or shear strain. For a Newtonian fluid, the normal and shear stres
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Book chapters on the topic "Generalized velocity"

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Morozova, Anna S., Elena N. Vilchevskaya, Wolfgang H. Müller, and Nikolay M. Bessonov. "Interrelation of Heat Propagation and Angular Velocity in Micropolar Media." In Dynamical Processes in Generalized Continua and Structures. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11665-1_23.

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Herman, Przemyslaw, and Krzysztof Kozlowski. "Trajectory Tracking for Robot Manipulator Using Generalized Velocity Components." In Romansy 14. Springer Vienna, 2002. http://dx.doi.org/10.1007/978-3-7091-2552-6_19.

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Lusk, Craig. "Angular-Velocity-Partitioned Linkages: Generalized Planar Parallel-Guiding Linkages." In Mechanisms and Machine Science. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-95489-4_24.

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Nikabadze, Mikhail, and Armine Ulukhanyan. "Application of Eigenvalue Problems Under the Study of Wave Velocity in Some Media." In Higher Gradient Materials and Related Generalized Continua. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30406-5_10.

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Jia, Menghao, Fanyi Zhang, Xinyi Lyu, Yuncheng Wen, and Hua Xu. "Three-Dimensional Hydrodynamic Analysis and Early Warning of Ω-Collapse in the Lower Reaches of the Yangtze River Based on Experimental Study on Generalized Model." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-6138-0_140.

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AbstractUnder the background of the construction of cascade reservoir group in the main stream of the Yangtze River, the lower reaches of the Yangtze River are faced with new water and sediment situation, which leads to the increased risk of bank collapse in the lower reaches of the Yangtze River. Therefore, the purpose of this study is to have a certain supporting significance for the prevention and control of riverbank collapse disasters. The study takes the Jiangsu section of the lower reaches of the Yangtze River as the research object. Firstly, according to the measured data over the year
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Holm, Darryl D., Ruiao Hu, and Oliver D. Street. "On the Interactions Between Mean Flows and Inertial Gravity Waves in the WKB Approximation." In Mathematics of Planet Earth. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-40094-0_5.

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AbstractWe derive a Wentzel–Kramers–Brillouin (WKB) closure of the generalised Lagrangian mean (GLM) theory by using a phase-averaged Hamilton variational principle for the Euler–Boussinesq (EB) equations. Following Gjaja and Holm 1996, we consider 3D inertial gravity waves (IGWs) in the EB approximation. The GLM closure for WKB IGWs expresses EB wave mean flow interaction (WMFI) as WKB wave motion boosted into the reference frame of the EB equations for the Lagrangian mean transport velocity. We provide both deterministic and stochastic closure models for GLM IGWs at leading order in 3D compl
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Ruzhich, Valery V., and Evgeny V. Shilko. "A New Method for Seismically Safe Managing of Seismotectonic Deformations in Fault Zones." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_3.

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AbstractThe authors outline the results of long-term interdisciplinary research aimed at identifying the possibility and the methods of controlling tangential displacements in seismically dangerous faults to reduce the seismic risk of potential earthquakes. The studies include full-scale physical and numerical modeling of P-T conditions in the earth’s crust contributing to the initiation of displacement in the stick-slip regime and associated seismic radiation. A cooperation of specialists in physical mesomechanics, seismogeology, geomechanics, and tribology made it possible to combine and gen
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Novak, Peter. "Case 39: Hypothermia in Frontotemporal Dementia." In Autonomic Testing, edited by Peter Novak. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190889227.003.0044.

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This case illustrates severe generalized autonomic failure associated with frontotemporal dementia (FTD) and hypothermia. The tilt test provoked severe sustained orthostatic hypotension associated with reduced heart rate response and a decline in cerebral blood flow velocity. Thermoregulation is a vital function of autonomic nervous system.
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Novak, Peter. "Case 43: Multiple System Atrophy and Vitamin B12 Deficiency." In Autonomic Testing, edited by Peter Novak. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190889227.003.0049.

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This patient showed severe generalized autonomic failure associated with compensated orthostatic hypotension, which is consistent with multiple system atrophy (MSA). Cerebral autoregulatory failure was associated with low supine cerebral blood flow velocity, which remained stable during the tilt. Small fiber neuropathy, biopsy-proven, mixed, was affecting both sensory and autonomic fibers.
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Magnan, François, and Gonzalo E. Reyes. "Category Theory as a Conceptual Tool in the Study of Cognition." In The Logical Foundations of Cognition. Oxford University PressNew York, NY, 1994. http://dx.doi.org/10.1093/oso/9780195092158.003.0005.

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Abstract The aim of this paper is to introduce category theory as a conceptual tool in the study of cognition. We believe that category theory has several advantages over set theory as a guide in analyzing and conceptualizing basic intentional abilities of the human mind such as the abilities to refer, to count and to learn. We illustrate consideration (1) with an example. We all know from high school that some quantities are scalars (temperature, pressure), whereas others are vectors (velocity, force).The latter have not only magnitude but direction. As physics developed, the need for a gener
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Conference papers on the topic "Generalized velocity"

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Tian, Chunxu, Zhichao Huang, Hongzeng Li, and Fei Chen. "Analysis of the Velocity of Two-Layer Generalized Parallel Manipulators." In 2024 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2024. http://dx.doi.org/10.1109/icma61710.2024.10633153.

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Bandeira, Merlin C. E., Rogaciano M. Moreira, Felipe S. Assunção, et al. "Localized and Generalized Corrosion Evaluation of S13CR in Shale Oil & Gas Production Conditions." In CONFERENCE 2024. AMPP, 2024. https://doi.org/10.5006/c2024-21106.

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Abstract To understand the performance of S13CR on shale gas field, the ability of oxide layer to repassivate on erosion environment was investigated by means of electrochemical and rotating cage tests at 300 bar of total pressure with 10 bar of CO2, 1.2 mbar of H2S partial pressure with balance of nitrogen; sand particles concentration of 50g/L, 26% NaCl, stir velocity of 1,000 RPM and temperature of 115°C. Based on the results, it was observed stable potential (LPR) under erosion condition (with sand) when compared to reference test (without sand). Despite the huge amount of sand and the hig
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Wilkie, David, Jur van den Berg, and Dinesh Manocha. "Generalized velocity obstacles." In 2009 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2009). IEEE, 2009. http://dx.doi.org/10.1109/iros.2009.5354175.

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Oughstun, Kurt Edmund. "Generalized Group Velocity Description." In Frontiers in Optics. OSA, 2012. http://dx.doi.org/10.1364/fio.2012.fw3a.6.

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Kitic, Srdan, and Jerome Daniel. "Generalized Time Domain Velocity Vector." In ICASSP 2022 - 2022 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2022. http://dx.doi.org/10.1109/icassp43922.2022.9747173.

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Stovas, A., and S. Fomel. "Generalized Velocity Approximation in Anisotropic Media." In 81st EAGE Conference and Exhibition 2019. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201901529.

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Mickens, Ronald E. "Generalized Harmonic Oscillators: Velocity Dependent Frequencies." In ASME 2001 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/detc2001/vib-21417.

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Abstract Preliminary results are given on a new class of nonlinear oscillator equations that generalize those of the usual linear harmonic case. These equations take the form ẋ = f(x)y and ẏ = −g(y)x, where f(x) and g(y) are continuous with first derivatives, and f(0) &amp;gt; 0, g(0) &amp;gt; 0. Of interest is the fact that these equations have a first-integral, i.e., there exists a function H(x,y) such that along a particular trajectory in the (x,y) phase space, H(x,y) = constant. We work out several general results related to this system of equations and illustrate them with several special
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Yang, Qin, Yulu Liu, Haijun Zhang, and Chuncheng Zuo. "Derivation of generalized Maxwell velocity slip model." In PROCEEDINGS OF THE 29TH INTERNATIONAL SYMPOSIUM ON RAREFIED GAS DYNAMICS. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4902618.

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Guerra, Claudio, and Biondo Biondi. "Migration-velocity analysis using image-space generalized wavefields." In 13th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 26-29 August 2013. Society of Exploration Geophysicists and Brazilian Geophysical Society, 2013. http://dx.doi.org/10.1190/sbgf2013-323.

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Clapp, Robert G. "Reference velocity selection by a generalized Lloyd method." In SEG Technical Program Expanded Abstracts 2004. Society of Exploration Geophysicists, 2004. http://dx.doi.org/10.1190/1.1845331.

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Reports on the topic "Generalized velocity"

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Wilson, D., Chris Pettit, Vladimir Ostashev, and Matthew Kamrath. Signal power distributions for simulated outdoor sound propagation in varying refractive conditions. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48774.

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Probability distributions of acoustic signals propagating through the near-ground atmosphere are simulated by the parabolic equation method. The simulations involve propagation at four angles relative to the mean wind, with frequencies of 100, 200, 400, and 800 Hz. The environmental representation includes realistic atmospheric refractive profiles, turbulence, and ground interactions; cases are considered with and without parametric uncertainties in the wind velocity and surface heat flux. The simulated signals are found to span a broad range of scintillation indices, from near zero to exceedi
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Ostashev, Vladimir, Michael Muhlestein, and D. Wilson. Extra-wide-angle parabolic equations in motionless and moving media. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42043.

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Wide-angle parabolic equations (WAPEs) play an important role in physics. They are derived by an expansion of a square-root pseudo-differential operator in one-way wave equations, and then solved by finite-difference techniques. In the present paper, a different approach is suggested. The starting point is an extra-wide-angle parabolic equation (EWAPE) valid for small variations of the refractive index of a medium. This equation is written in an integral form, solved by a perturbation technique, and transformed to the spectral domain. The resulting split-step spectral algorithm for the EWAPE a
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